authentication_api.php
(auth_process_plain_password): take a salt parameter and generate a random one instead of using the password if none is provided
(auth_does_password_match): get the salt from the stored password and pass it to auth_process_plain_password()

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@1518 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9